Holiday in the family mansion Kravchenko turns into a terrible tragedy – a fire in which the baby dies. The official investigation adheres to the accident version. This conclusion suits all of Mary's relatives, but not her own. She is convinced that an attacker who threatened their families specifically set fire to their beautiful home during the birthday of her son, Maria Loni. On that day, at Mary's insistence, all the relatives gathered under one roof. The further she dives into the investigation, the more convinced that not only the enemies but also her relatives may be interested in the fire ...

Mary will have to endure betrayal, learn the shocking secrets of the past, renounce, and repent several times in her own sins, before she finds out the truth and finds herself a bold and independent woman of thought and judgment.